INTRODUCTION ...... ......... .......... .................. 83 BIOSYNTHESIS OF NICOTINAMIDE ADENINE DINUCLEOTIDE 83 Anaerobic De Novo Pathways .. ...... .... .... ... 84 Dihydroxyacetone phosphate-aspartate pathway 84 Formate-aspartate pathway .............................................. 87 Aerobic Tryptophan Catabolic Pathway 87 Genetics of Anaerobic Nicotinamide Adenine Dinucleotide Biosynt...

The dehydrogenase pathway and the succinylase are involved in synthesis of L-lysine Corynebacterium glutamicum. Despite low contribution rate to production, is favorable for its simple steps potential increase production L-lysine. effect ammonium (NH4+) concentration on biosynthesis was investigated, results indicated that can be promoted a high NH4+ environment. In order reduce requirement NH4...

Under osmotic stresses, proline accumulation is an important response of plants to these conditions. Proline is a compatible osmolyte which affects many cellular and molecular aspects of plant in both normal and stressful situations. Proline is shown to be involved in plant development in normal condition and in conferring resistance to plant under biotic and abiotic stresses. Therefore, many s...

objective(s):isoprenoid biosynthesis is a key metabolic pathway to produce a wide variety of biomolecules such as cholesterol and carotenoids, which target cell membranes. on the other hand, it has been reported that statins known as inhibitors of isoprenoid biosynthesis and cholesterol lowering agents, may have a direct antimicrobial effect on the some bacteria. the exact action of statins in ...

Plant growth and development are regulated by internal signals and by external environmental conditions. One important regulator that coordinates growth and development with responses to the environment is the sesquiterpenoid hormone abscisic acid (ABA). ABA plays important roles in many cellular processes including seed development, dormancy, germination, vegetative growth, and environmental s...

Fibroblast growth factor-1 (FGF-1) is secreted by astrocytes and stimulates apolipoprotein E (apoE)-HDL biogenesis by an autocrine mechanism to help in recovery from brain injury. In apoE-deficient mouse astrocytes, FGF-1 stimulated cholesterol biosynthesis without enhancing its release, indicating a signaling pathway independent of apoE biosynthesis upregulation. SU5402, an inhibitor of FGF re...

Auxin concentrations in plants are tightly regulated through both biosynthesis and degradation. In the past few years, much progress was made in the area of auxin metabolism. Genetic and biochemical studies in Arabidopsis unequivocally established a complete tryptophan (Trp)-dependent two-step auxin biosynthesis pathway in which Trp is first converted into indole-3-pyruvate (IPA) by the TAA fam...